Charlotte Pipe 3-in PVC DWV Coupling in the PVC DWV Pipe & Fittings department at Lowes.com
Lasco 3/4 inch Coupling - FPT x FPT - Par West Turf
PVC Male Adapter Pipe Fitting - SCH 40 PVC Fittings 3/4 Inch MNPT x 1 Inch Slip Socket PVC Connectors - PVC Pipe Connectors for Plumbing Water Line – Male Adapter Fitting - Amazon.com
3 inch Slip x Slip Coupling PVC Schedule 40 Pressure Fittings - FaucetDepot.com
Charlotte Pipe Schedule 80 PVC Coupling, Gray, FPT x FPT, 3/4 In. | Brinkmann Hardware